Department of Mathematics
Maximum a Posteriori Estimators as a Limit of Bayes Estimators
- Author(s): Bassett, Robert
- Deride, Julio
- et al.
Published Web Locationhttps://arxiv.org/pdf/1611.05917.pdf
Maximum a posteriori and Bayes estimators are two common methods of point estimation in Bayesian Statistics. A number of references claim that maximum a posteriori estimators are a limiting case of Bayes estimators with 0-1 loss. In this paper, we provide a counterexample which shows that in general this claim is false. We then correct the claim that by providing a level set condition for posterior densities such that the result holds. Since both estimators are defined in terms of optimization problems, the tools of variational analysis find a natural application to Bayesian point estimation.